21396291

素因数分解:

$3^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{2467}}^1$

素因数の和:2543

約数の個数: 24

約数和(自身を含む): 33762240

約数和(自身を除く): 12365949

約数列:

[1, 3, 7, 21, 49, 59, 147, 177, 413, 1239, 2467, 2891, 7401, 8673, 17269, 51807, 120883, 145553, 362649, 436659, 1018871, 3056613, 7132097, 21396291]

約数ペア:

[(1, 21396291), (3, 7132097), (7, 3056613), (21, 1018871), (49, 436659), (59, 362649), (147, 145553), (177, 120883), (413, 51807), (1239, 17269), (2467, 8673), (2891, 7401)]